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Finding the Fourth Proportional to 231,838.60, 347,477.10 and 98,438.80

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Solution

The fourth proportional to 231,838.60, 347,477.10 and 98,438.80 is: 147,538.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,838.60 : 347,477.10 = 98,438.80 : x
  2. Step 2: Convert to fraction form
    231,838.60/347,477.10 = 98,438.80/x
  3. Step 3: Cross multiply
    231,838.60x = 347,477.10 × 98,438.80
  4. Step 4: Simplify right side
    231,838.60x = 34,205,228,751.48
  5. Step 5: Solve for x
    x = 34,205,228,751.48/231,838.60
  6. Step 6: Final answer
    x = 147,538.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.